Unnamed (near Shirley Lake)

The Unnamed (near Shirley Lake) is a uranium mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Unnamed (near Shirley Lake)

Commodity

Primary: Uranium

Location

State: Alaska
District: Yentna

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Reference): Primary Reference = Freeman, 1963

Comment (Reserve-Resource): Reserves = All deposits appear to be small and low grade (Cobb, 1979).

Comment (Workings): Workings / Exploration = Shallow pits were excavated and scintillometer surveys conducted by private concerns.

Comment (Geology): Geologic Description = Secondary uranium minerals are sporadically localized along joints in Tertiary tuff and tuff-breccia (Cobb, 1979, p. 22; Reed and others,1978; and Reed and Nelson,1980). Maximum amount of radioactivity in U.S. Geological Survey samples was 0.021% uranium; a prospector reported assay of 0.29% uranium in one sample (Freeman,1963, p. 29-30). Radioactive rock probably formed by deposition of small amounts of uranium that migrated with subsurface water moving along joints. Exploration did not disclose any extension of radioactive rock below surface or away from joints. The joint controlled deposits, sporadic mineralization, and general low grade of the radioactive areas indicate unfavorable conditions for the presence of ore-grade material. All deposits appear to be small and low grade (Cobb, 1979).

Comment (Commodity): Ore Material = Unknown secondary uranium minerals

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Tertiary to Holocene.

References

Reference (Deposit): Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.

Reference (Deposit): Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.

Reference (Deposit): Freeman, V.L., 1963, Examination of uranium prospects, 1956: U.S. Geological Survey Bulletin 1155, p. 29-33.

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than minerals fuels and construction materials) in the Kenai and Tyonek Quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-86, 36 p.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., and Reed, B.L., 1980, Summaries of data and lists of reference to metallic and selected nonmetallic mineral deposits in the Talkeetna quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-884, 106 p.

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